Mechanism for water-marking paper



Oct. 31, 1933. H. BROWN MECHANISM FOR WATER MARKING PAPER Filed Feb. 15,1932 Patented Oct. 31, 1933 UNlTED STATES 1,933,006 7 MECHANISM FORWATER-MARKINGPAPER Howard Brown, Longmeadow, Mass, assignor toSouthworth Company, West Springfield, Mass, a corporation ofMassachusetts Application February 15, 1932. Serial No. 592,910

Claims.

This invention relates to paper-making machines and particularly tomechanism for applying water-marks to the paper as it is produced insuch machines.

One object of my invention is to provide improved and readily accessiblemeans for bringing the water-marking roll into exact parallel relationwith the associated bottom roll, togethor with improved means forsimultaneously adjusting both ends of the water-marking roll toward andaway from the bottom roll to eifect the desired impression of thewater-marking plates on the partly-formed paper as it passes between therolls. r

Another object of my invention is to provide means by which theWater-marking roll may be conveniently adjusted axially, together withmeans for positively driving the roll in every axial position thereof.

My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claims.

A preferred form of the invention is shown in the drawing, in which Fig.1 is an end elevation of parts of a papermaking machine embodying myimprovements;

Fig. 2 is a front view thereof, looking in the direction of the arrow 2in Fig. 1, and

Figs. 3 and 4 are detail sectional views, taken along the lines 33 and4-4 respectively in Fig. 1.

Referring to the drawing, I have shown. a frame on which a bottom roll11 is ,rotatably supported in stands or brackets 12. able means (notshown) may be provided for rotating the bottom roll 11.

A water-marking roll 15 is mountedabove the bottom roll 11 and isrotatable in bearings 16 in arms 17 pivoted at 18 to the stands orbrackets 12.

Nuts 20 are swiveled in the outer ends of the arms 17. Front and rearelevating screws 22 and 23 are threaded in the nuts 20 and extenddownward through openings 24 (Fig. 2) in the frame 10. Worm gears 26 and2'7 are mounted on the elevating screws 22 and 23, and the lower ends ofthe hubs of the worm gears 26 and 27 engage the upper surface of theframe 10, as shown in Fig. 2, and thus definitely limit downwardmovement of the screws and worm gears.

Pressure levers 30 are pivoted at 31 to the frame 10 and are providedwith slots 32 through which the reduced lower end portions 33 of thescrews 22 and 23 extend. Collars 34 are secured Any suit to the endportions 33 below the levers 30. Weights W are mounted on the levers 30and' may be secured in adjusted positionthereon by binding screws 36.The weighted levers 301apply yielding pressure to the water-marking roll15 during the operation of the machine.

A sleeve 40 (Fig.3) is rotatable in fixed bearings '41 on the frame 10and is provided with a hand Wheel 42 at one end, a worm 44 between thebearings 41,.and a collar 45 secured to the sleeve 65 40 at the endthereof opposite to the hand wheel 42. The worm 44 engages the worm-gear26 previously described andconstitutes means for turning the frontelevating screw 22 to adjust. the front bearing 16 of the water-markingroll 15. 7

A shaft extends loosely through the sleeve 40 and also through bearings51 (Fig. 1) 'at the rear side of the machine. The shaft 50isprovidedwith a hand wheel 52 at, the front end thereof and with a worm54 mounted between the bearings 51 and engaging the worm gear 27 on therear elevatingscrew 23.

With this adjusting mechanism, the bearings 16 at each end of thewater-marking roll 15 may be raised or lowered and may be separatelyadjusted as desired to bring the water-marking roll 15 into exactparallel relation to the bottomroll When the desired parallel relationhasv been attained, a set screw or other locking device 8 (Fig. 3) maybe tightened to connect the hand wheel 42 andsleeve 40 to the shaft 50,so that the worms 44 and 54 may be turned simultaneously by use of thehand wheel 52. It is then possible to raise or lower the water-markingroll 15 without disturbing its parallel relation to the bottom roll 11.I

I have thus provided very convenient mechanism by which the operatorstanding at the front of the machine is enabled to separately raise orlowereither the front or rear bearing of the" water-marking roll or tosimultaneously raise or lower both bearings to change the spacing be-.

tween the rolls 11 and .15.

This arrangement constitutes a substantial im- 1 provement over theprevious practice, in which it was necessary to adjust the front bearingfrom the front of the machine and to adjust the rear bearing from therear of the machine, and in which no simultaneous adjustment of thefront l and rear bearings was possible. A great deal of time and laboris thus saved, particularly when changing over from one water-markingroll to another or from one thickness of paper to another,

I have also provided improved means for adjusting the water-marking roll15 axially. For this purpose a member '70 is loosely mounted in a grooveor recess in the forward end of the shaft 71 of the water-marking roll15. This member 70 (Fig. 4) is threaded to receive an adjusting screw 72rotatable at its rear end in a fixed bear ing'73 and held from axialmovement therein by a shoulder 74 and collar 75. A hand wheel '76 isprovided at the front end of the screw 72, by which the screw may beturned to adjust the member '70 and the water-marking roll 15 axially ofthe roll.

The shaft 71 is preferably provided at its rear end with a gear engaginga wide face gear 81 on the shaft 82 of the bottom roll 11. A positivegear drive is thus provided between the rolls 11 and 15 in every axialposition of the water-marking roll. Consequently the water-markingplates M may be readily shifted axially to bring them into desiredalignment with the edges of the paper P. It is unnecessary to re-adjustthe driving gears, as they are at all times in driving relation.

I have thus provided mechanism for adjusting the water-marking rollvertically or axially in such manner that the operation of the machineis facilitated. Accurate setting of the watermarking plates is much morequickly and easily accomplished in my improved machine.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is:-

1. In a paper-making machine, a bottom roll, a water-marking roll,bearings for the two ends of said water-marking roll, pivoted armssupporting said bearings, elevating screws connected to the swingingouter ends of said arms, a horizontal shaft connected to turn one ofsaid elevat- 2. In a paper-making machine, a bottom roll, a

water-marking roll, bearings for the two ends of said water-markingroll, pivoted arms supporting said bearings, elevating screws connectedto t 1e swinging outer ends of said arms, a horizontal shaft connectedto turn one of said elevating screws, a sleeve loose on said shaft andconnected to turn the other screw, and hand wheels on said shaft andsleeve and located at one side of the machine by which they may beseparately rotated.

3. In a paper-making machine, a bottom roll, a water-marking roll,bearings for the two ends of said Water-marking roll, pivoted armssupporting said bearings, elevating screws connected to the swingingouter ends of said arms, means to turn said screws, means to limitdownward movement of said screws, levers connected to the lower ends ofsaid elevating screws, and weights to tension said levers, said weightsbeing adjustable on said levers to vary the pressure on the watermarkingroll.

4. In a paper-making machine, a bottom roll, a water-marking roll, asingle member loose on said water-marking roll but held from relativeaxial movement thereon, a single adjusting screw threaded into saidmember, means to hold said screw from axial movement in said machine,manual means by which said screw may be rotated to positively adjustsaid water-marking roll axially in either direction relative to saidbottom roll and to retain said roll in adjusted position, and a positivedriving connection between said rolls operative in every axiallyadjusted position of said water-marking roll.

,5. In a paper-making machine, a bottom roll, a water -marking roll,bearings for the two ends of said water-marking roll, devices effectiveto separately raise and lower each of said bearings of saidwater-marking roll, separate manual means located at one and the sameside of the machine and by which either one of said devices may beseparately actuated from a single operating position, and means tocouple said devices together for raising and lowering both of saidbearings of said water-marking roll simultaneously and equally and fromthe same operating position.

HOWARD BROWN.

